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Ford 9 in the C4

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Old Jul 19, 2017 | 05:10 AM
  #1  
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From: Ornskoldsvik
Default Ford 9 in the C4

Hi, today i began cutting away the brackets on the old Lincoln 9" i got my hands on and placed it under the Vette. It looks like the first thing to do is to cut the storage floor behind the seats to make room for the housing.

or is there any other solution i haven´t thought of?

Another thing! What center section and diff do you recommend? I was looking at Strange aluminium bolt through with 31 spline axles. Looks like a nice piece.

Thanks
/Svante.
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Old Jul 19, 2017 | 05:38 AM
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You could consider using a Dutchman housing and keep the IRS
It would need some fabrication to keep the geometry correct .
Worth a look at

Last edited by bfit; Jul 19, 2017 at 05:39 AM.
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Old Jul 19, 2017 | 05:50 AM
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Originally Posted by bfit
You could consider using a Dutchman housing and keep the IRS
It would need some fabrication to keep the geometry correct .
Worth a look at
Looks nice, but the whole idea was to go solid rear 4-link. This will require some fabrication as well but i dont think it´s impossible.

Thanks
/Svante.
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Old Jul 19, 2017 | 02:53 PM
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Woulda been nice if GM offered the solid axle as an option!
IRS sucks for drag racing, whats the rest of your plans for the car (Trans motor etc)
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Old Jul 19, 2017 | 03:13 PM
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Originally Posted by cuisinartvette
Woulda been nice if GM offered the solid axle as an option!
IRS sucks for drag racing, whats the rest of your plans for the car (Trans motor etc)
Yes i agree. The car has a fully built Lm7 with twin BW S366 turbos. And a ZF 6spd transmisson from a Bmw. I dont know how well the tranny will perform yet since it's new to this setup but i know a lot of guys who have put some serious power thrugh them.

I'll just have to see when i'm finished with the rear end i guess

/Svante
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Old Jul 19, 2017 | 09:24 PM
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A Ford 9" will require opening up the rear floor for clearance. I have a friend who installed on in his Calloway aerobody. He didn't want to cut the floor so his car is jacked up. I had to cut a cover my floor slightly with my 12 bolt. Needed an inch or so of clearance.
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Old Jul 20, 2017 | 01:03 AM
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Originally Posted by 383vett
A Ford 9" will require opening up the rear floor for clearance. I have a friend who installed on in his Calloway aerobody. He didn't want to cut the floor so his car is jacked up. I had to cut a cover my floor slightly with my 12 bolt. Needed an inch or so of clearance.
great info, thanks!

I dont mind cutting the floor, i thought i just make an aluminium cover with proper clearance after.

/Svante
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Old Jul 20, 2017 | 01:13 AM
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Originally Posted by Svante
great info, thanks!

I dont mind cutting the floor, i thought i just make an aluminium cover with proper clearance after.

/Svante
My car beat you to it.
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Old Jul 20, 2017 | 08:47 AM
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Originally Posted by Svante
Hi, today i began cutting away the brackets on the old Lincoln 9" i got my hands on and placed it under the Vette. It looks like the first thing to do is to cut the storage floor behind the seats to make room for the housing.

or is there any other solution i haven´t thought of?

Another thing! What center section and diff do you recommend? I was looking at Strange aluminium bolt through with 31 spline axles. Looks like a nice piece.

Thanks
/Svante.
Hi Svante,

Not sure what year you have. But on my 92 it has ABS and may be different. The passenger side was trimmed for the exhaust. However, I will be removing it as to clean up the underside of the floor. To get the car to sit low (as you know) the floor will need to be removed or trimmed. My floor is removable to access the center section.

I am using the Strange aluminium bolt through (I think its called Pro Case?). I am running 35 spline axles-But would not recommend them. As you would be limited to a few locker type of differentials which are noisy, clicks, and bangs. I removed the locker and switched to a spool (not the wise choice for the street-LOL). The 31 spline can run a LSD, Detroit Locker, and others.

I have a new PC and don't have access to my photos (yet).

Good luck with the build!
Steve

Just added 2 photos next post

Last edited by STEVEN13; Jul 20, 2017 at 08:56 AM. Reason: Just added 2 photos next post
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Old Jul 20, 2017 | 08:55 AM
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Old Jul 20, 2017 | 09:31 AM
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Default

Originally Posted by Svante
Hi, today i began cutting away the brackets on the old Lincoln 9" i got my hands on and placed it under the Vette. It looks like the first thing to do is to cut the storage floor behind the seats to make room for the housing.

or is there any other solution i haven´t thought of?

Another thing! What center section and diff do you recommend? I was looking at Strange aluminium bolt through with 31 spline axles. Looks like a nice piece.

Thanks
/Svante.
No need to hack the car apart to install a solid axle. I can provide you with a complete setup, matched shocks, and springs - everything will bolt in and no nasty cross-member that WILL screw up your exhaust and ground clearance.

Simply bolt the setup in within a days time. GO racings and never worry about it again. Have built MANY of them and can give you people for reference that are running it today.

My car with a 434CI motor went 1.24 60ft times!

Give me a ring at 814.594.2357
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Old Jul 20, 2017 | 02:54 PM
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Contact Quick Performance for a complete center section... and any/everything else you need for the 9". Ask to speak with Brydon.

http://www.quickperformance.com/Comp...ons_c_558.html

I run their Yukon Thru Bolt with a 35 spline spool in my 84.
Will
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Old Aug 9, 2017 | 05:34 PM
  #13  
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Originally Posted by cuisinartvette
... IRS sucks for drag racing, ...
Why?
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Old May 19, 2026 | 12:28 PM
  #14  
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Default Would love to talk about this build

I am doing a 9”‘swap in my 84 vette and would love any direction or knowledge you still have appreciate your time
@_ski_dwn_it

QUOTE=_ski_dwn_it;1595183330]No need to hack the car apart to install a solid axle. I can provide you with a complete setup, matched shocks, and springs - everything will bolt in and no nasty cross-member that WILL screw up your exhaust and ground clearance.

Simply bolt the setup in within a days time. GO racings and never worry about it again. Have built MANY of them and can give you people for reference that are running it today.

My car with a 434CI motor went 1.24 60ft times!

Give me a ring at 814.594.2357[/QUOTE]

Last edited by morleybuilds; May 19, 2026 at 12:29 PM.
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Old May 19, 2026 | 01:30 PM
  #15  
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Originally Posted by morleybuilds
I am doing a 9”‘swap in my 84 vette and would love any direction or knowledge you still have appreciate your time
@_ski_dwn_it

QUOTE=_ski_dwn_it;1595183330]No need to hack the car apart to install a solid axle. I can provide you with a complete setup, matched shocks, and springs - everything will bolt in and no nasty cross-member that WILL screw up your exhaust and ground clearance.

Simply bolt the setup in within a days time. GO racings and never worry about it again. Have built MANY of them and can give you people for reference that are running it today.

My car with a 434CI motor went 1.24 60ft times!

Give me a ring at 814.594.2357
[/QUOTE]

Get in touch I can assist
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